How To: Coin Cell to AA Battery Conversion Adapter
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- เผยแพร่เมื่อ 26 ม.ค. 2017
- How to convert coin cell and button cell batteries to AA or AAA batteries. In this video we convert a diabetes glucose meter from a cr2032 battery to AA and AAA batteries for longer life and cost savings. We construct a fake coin cell battery adapter that runs on AA/AAA batteries and allows the user to switch back to coin/button cell batteries if needed. **PATENT PENDING www.uspto.gov/*** Music by www.bensound.com
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holly cow i was searching for this for like a month, i need to do this for my telescope finder. you saved me, thanksss !
Thank you so much, I’ve got an old pro audio thing from the 90s that eats through cr2032 every three months and programming it takes a whole afternoon. I was almost about to buy the modern equivalent but you saved me $500+.
Nice vid, well done, I actually learned something!
Wow fantastic tutor. Just what I needed! Thanks :)
Heyyyy, back again! 😁😁😁
Great, exactly what I need for my smart tag plus, thank you
An absolute kick-ass name for your channel. I grew up with McGyver. To all my neighbors back in the day, I'm sorry XD
Nice work. Could use thin double-sided tape as a barrier
Because of the way a lot of the 2032 battery holders are made, using the same size disk (coin) for the top and the bottom could result in them being shorted out by the side connector. As such, you might want to consider using a smaller disk on the bottom disk / coin. If you still want to use a penny, then you need to file / grind the outside edge a bit so that it has a smaller diameter.
Also, I checked out the diameter of a US penny on one device that I have that uses a 2032 battery and it would not work since the penny is smaller in diameter than the 2032 battery. A US nickel is too large also, so for that device, I would need to decrease the diameter of the nickle slightly to fit in the battery compartment or create some shims that would fit on the side of the penny to make it fit the battery compartment. Instead, I just opened the unit and soldered wires onto the wires that went to the battery holder and then ran them out the case so that I could install an external battery pack on the outside of the unit.
Did you not notice that he used a round piece of heat shrink between the pennies to act as an insulator?
@@medic7989 I < didn't even notice. Thx for pointing it out!
@@medic7989 That heatshrink does not address the issues GrumpyOldMan raised.
love it man... dooope video.
is there any issue with current ? some devices needs only mili-ampers and two AA bateries are able to produce 2-3 ampers
Is there a way to do this with smaller button cells? Like lr44 batteries? I’m trying to make some kits for figures I have that take the smaller cells. I know this is an old video. But hoping you could help. Thanks!
Can you just solder the positive and negative leads directly to the positive and negative posts on the device where the original 2032 mounted? It would eliminate the need for the 2 pennies I would think. I'm thinking about a conversion for a remote that burns these little batteries up very fast.
Yes! I chose not to do that because I wanted to keep the ability to use the 2032 batteries and/or the AAA battery pack. Soldering would definitely work if you can get to the parts.
Great job. What if the device requires three button batteries, do you the 2 AAA can be enough?
great video. couldnt you use an old Cr2032 battery? (or the original disc battery for the case)? or, couldnt you just attach the cables directly to the metal contact where the disc battery goes? thanks!
Did you ever find out?
He said you can attach the cables to a different comment, but I haven't seen about reusing the old coin battery
Ccol 🖖👍
Would be nice to see someone building a superCap version in the size of the 2032 batterys 🤔
Would it be possible to just solder the wires to a dead CR2032 and be good to go?
…or would you have to somehow tear it apart & gut the insides, removing the anode/cathode material, and then reassemble just the outer shell?
if you use a dead cr2032 battery, there'd be no space for the wires to go.
I used a similar idea with a wall clock but I used tape to battery and taped the wires to the clock contacts
I stuck a penny in my garage door opener to check the size/fit and it seems a hair too small. Since the diameter of the CR2032 is 20mm, I would get a 20mm washer and then a penny for the bottom. Ground both thicknesses down for a total of 3.2mm (that's the exact thickness of a CR2032). I'll give that a try or solder directly to the leads in the garage door opener, smart tags, or whatever.
also, the diameter of a penny is 19.05mm (0.75 inches).... just a hair below the 20mm diameter of a CR2032.
I have tried this and it works some times. I have burned out some but it works on others. I want to use 8 batteries to replace three button batteries for a total of 9 vdc.
Lawrence Rhodes you would need a total of 6 AA or AAA batteries to create 9 volts. Each AA or AAA is 1.5 volts each. Thanks for watching, I greatly appreciate it!
"I have burned out some but it works on others"
@@ewfuoywoef32pri That or they used eight batteries and delivered >12 V.
Hi? How to charge coin battery cell? Without using the charger becuz i don't have those just a diy one or materials that only home have
Can I just use The button battery and then then use aDead one and then and attach it to the battery holder does that also work
I have one of those button batteries in a panthervision hat. Cool ball cap with led lights in the brim. Since the battery has died, I've been considering converting it to run on AAA. They're cheap enough. Rather than creating a fake button battery, why not just replace the battery housing with a single AAA housing? Does a single button put out MORE voltage than a AAA? Would a single AAA blow out the lights? I have ZERO electrical know how. Had an electrician, IE "sorcerer" to the house once (at considerable expense) simply to push a GFI switch in the garage that had tripped out the house........so be kind ;-)
Christopher O'Dalaigh The CR2032 outputs 3V. Each AA/AAA outputs 1.5V, so two in series create 3V. If you run them with the positive sides together, they output 3V, but have the capability of higher amperage, but the device will only draw what it needs. If you were to use 4 batteries in a series/parallel configuration, they would run twice as long, but run at 3V.
{+/-] < {+/-] (2x 1.5V = 3V in series)
+
{+/-] < {+/-] (3V)
There are other things to consider, but you can keep doing this and the batteries will last forever, versus the low amperage of the smaller CR2032.
Thanks, The hat actually uses 4 cr2032's. I was thinking I'd change it all out to a single 9v, but then maybe it wouldnt be as bright OR it will explode on my head. One or the other ;-)
Christopher O'Dalaigh It would take 8 AA/AAA batteries in series... So that's a lot. Adding a 9th would probably only make it brighter. If it gets too much power, it'll burn out the LED. I've done it before.
You should get the smartphone app "Ohms Law". It is the best tool for quickly and simply finding the answer to voltage, amperage, and resistance equations. Its free, but it is awesome! Thanks for watching!
@@mcgyverinstituteofninjatech cool I'm going look for it!
PENNIES! Why didn't I think of this.... I've got a couple special-purpose computers around the house, and nature of those systems has it that they're only used once or twice a month. Standing around unused for so long, they always do lose their BIOS settings, which are stored in CMOS and buffered via a CR2032 battery. Time to convert them to 2xAA, that should last considerably longer than the paltry little CR2032. :)
This concept can be applied to many different connectors, batteries, and devices. Thanks for watching!
WHAT'S WITH THE NOISE IN THE BACKGROUND!
I want to do this with the sensor of my smart garage door opener. The sensor takes 1 CR2450. Will 2 rechargeable aaa do the trick?
For something like that, if you have an outlet nearby, this would be a better solution, if you don’t know how to build your own stepdown circuit. This will power your device off of USB. T-HOT 2X AA AAA Battery Eliminator USB, 5V to 3V Step-Down Cable for Thermometer, Clocksm, Calculator www.amazon.com/dp/B0831DR98J/ref=cm_sw_r_cp_api_i_L223EbXTWR3MC
Anyone seen that kind of adapter in shops yet ?
Did the patent pass? I looked at the link and got a 404
How would I do this if my glucose meter takes two cr2032 batteries?
You use 4 batteries instead of 2
the cr2032 battery may have a shelf life of 10 years which AAA can't last longer than 5 years. They are just 10c each if order from china on ebay
Those 10c ones may last a couple months if you're lucky. And they definitely won't provide the proper voltage when it's asked for.
yeah, those chinese knock-offs come fresh in the pack with the proper voltage, but less than have the amperage of the ones you can pick up at your local CVS, which costs $2-$3 each! And the chinese ones will only last a few weeks to a couple of months...what a pain!
@@ekummel thanks. Now I know why they are 10c each
Is it possible to use an old depleted coin battery, thus not having to fiddle with pennies, or will that start charging from the aa batteries and thus creating a mess? (besides we don't have pennies in my country).
Rumor has it is yes. Butt personally I would be weary because you are sending voltage through dead lithium cells which cannot be good.
It won't work if the whole rim is used as a contact, (and this is common)
without more jiggering. No luck in finding a non DIY solution
True! There are many different possibilities and contact locations. The fun part is finding a solution that is "outside the box".
You left your radio on while recording your voice. Why?
Use rechargeable Lithium cell phone battery (cheapest available). Will last a long long time before it needs a recharge.
I have a rechargeable lithium button cell in my weather station transmitter and it doesn't last more than 2 hours. During the day, the built in solar cell charges it, but it will only work for 2 hours after dark. I've replaced the battery a dozen times and it will not last more than a few hours at best.
@@ekummel I meant a lithium battery that is used in feature phones. A lithium button cell is a few hundred (I think about 120 mah), while a feature phone battery is close to 1000 mah.
@@mohanvvip yeah. good question. I would like to know how shlong such a battery would last, how much they cost.
Why not just solder your wires directly to the contacts inside the unit? Then you wouldn't need the "penny adaptor" at all.
I was trying to make a fake battery, but your idea would work great too!
And thinking even further, I would use a permanent 120V adapter for stationary items like thermometer/hygrometer like the Xiaomi Mijia. Good for life!
can i buy one?
or 5
maybe just 2 actually
I want to do just the opposit, I want the AA or AAA holder to use CR2032 batteries. AA and AAA are rediculsy expenseive where as I can get CR2032 for less than 5cents each. So how do we do that?
Great question! I made a diagram for you. Shoot me your email and I'll send you the diagram. Not sure how else to get it to you. Have a good day!
nevergetany_original@yahoo.com when you send it, give me a note here with what the subject line is so I can find it easy. Also, how many CR2032 batteries go in the AA/AAA slots. I have several things that use AA or AAA batteries, and the CR2032 last longer, so I guess I need a conversion kit that can go into the existing AA/AAA holder.
I just sent it to you from MintechUSA, subject: battery conversion diagram. Let me know if you have any other questions.
CR2032 batteries are 3 volts each, while AAA and AA are only 1.5 volts each
McGyver Institute of Ninja Technology I wonder what would happen if you put 3 cr2032 batteries in a game gear (it uses 6 AAA batteries)
Dislike for the annoying background music. But thanks for the info
Cut the music... It's crappy, but even if it wasn't, it is annoying...
I liked the music.
The music is too loud and distracting. I'm really trying to understand what is being said and all I can thinkg of is the music is so loud I can't concentrate.
Damn dude. You need to quit biting your fingernails. Thats NASTY.
Get rid of the stupid music, so people can hear you clearly.👎
He was hiding batteries in the palm of his hand